As a teacher, I think giving teachers a spot to promote student work would be a good idea, but keep it as a student and teacher site only. Maybe a separate area like the 'Critiques or art discusson area where teachers cxan post student wotk for anyone to critique or comment on.
After just reading that AW is going limit free members to 3 posting a month. I said..OK.
But if you really want to save space, eliminate members who haven't been active in a year.
Limit "Premium" members to 10 post a months..maxium.
These 15 to 35 post a day by one person is absurd!
Restrict the size of ALL portfolio's to 100 150 images per year.
Most members have an e-mail or their own site where they can be contacted.
There is no need to have 200, 300, 400 pictures in one portfolio.
I manage a couple of sites, and once a member is not active, posting on the boards or their portfolio, they get eliminated, but they can still reapply to join back.
No need to keep dead weight around if you're trying to save space and the member(s) aren't participating is there?
Just a few suggestion from this "Freebie" until you change your policies.